| 考虑边坡不同演化阶段的岩土体抗剪强度参数反分析 |
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| 引用本文： | 龙赛琼,陈焕美,蒋文鹏,梁栋才,尹小涛. 考虑边坡不同演化阶段的岩土体抗剪强度参数反分析[J]. 水利与建筑工程学报, 2020, 0(1): 16-21. DOI: 10.3969/j.issn.1672-1144.2019.06.003 |
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| 作者姓名： | 龙赛琼 陈焕美 蒋文鹏 梁栋才 尹小涛 |
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| 作者单位： | １．云南省交通发展投资有限责任公司，云南昆明６５００３４；２．云南大永高速公路有限公司，云南大理６７１０００；３．云南省交通投资建设集团有限公司，云南昆明６５０２００；４．中国科学院武汉岩土力学研究所岩土力学与工程国家重点试验室，湖北武汉４３００７１；５．中国科学院大学，北京１０００００ |
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| 基金项目： | 云南省交通运输厅项目(云交科教[2017]23号);交通运输部科技示范项目(2017-09)。 |
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| 摘 要： | 岩土体抗剪强度参数是边坡稳定性分析的关键参数。目前，大多数岩土体抗剪强度反分析法都只围绕着边坡工程的某一阶段进行分析。为了更加贴合实际边坡发育的动态变化，提出一种新方法。考虑边坡不同演化阶段的岩土体抗剪强度参数反分析是一种基于极限平衡方法，对自然坡、开挖边坡、失稳边坡这三个过程进行了全工程周期反分析，结合边坡稳定性分析的前提条件，并通过对两个工程实例的分析得到了岩土体抗剪强度在不同阶段的衰减规律。利用极限平衡软件进行计算验证了方法的有效性，符合实际情况，同时工程开挖会对边坡稳定性参数造成严重的不利影响。
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| 关 键 词： | 极限平衡 全工程周期 反分析 前提条件 |
Inverse Analysis Method for Rock/soil Shear Strength in Different Slope Stages |
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| LONG Saiqiong,CHEN Huanmei,JIANG Wenpeng,LIANG Dongcai,YIN Xiaotao. Inverse Analysis Method for Rock/soil Shear Strength in Different Slope Stages[J]. Journal of Water Resources Architectural Engineering, 2020, 0(1): 16-21. DOI: 10.3969/j.issn.1672-1144.2019.06.003 |
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| Authors: | LONG Saiqiong CHEN Huanmei JIANG Wenpeng LIANG Dongcai YIN Xiaotao |
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| Affiliation: | (Yunnan Communications Investment&Developement Group Co.,Ltd.,Kunming,Yunnan 650034,China;Yunnan Dayong Highway Limited Company,Dali,Yunnan 671000,China;Yunnan Communications Investment&Construction Group Co.,Ltd.,Kunming,Yunnan 650200,China;State Key Laboratory of Geo-mechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan,Hubei 430071,China;University of Chinese Academy of Sciences,Beijing 100000,China) |
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| Abstract: | Shear strength parameters of rock and soil mass are the key issues of slope stability analysis. At present, most inverse analysis method of rock and soil mass focus on one stage of slope engineering. In order to fit the actual slope, a new method is proposed in this paper. Inverse analysis method for rock/soil shear strength in different slope stages is a method based on limit equilibrium. The three process, natural slope, slope excavation and instability of the slope are analyzed in the whole project cycle. Through the analysis of two engineering examples, the shear strength in the different stages of the attenuation law was determined. This method is verified by using limit balance software. It is also found that engineering excavation will have serious adverse effects on slope stability parameters. |
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| Keywords: | limit equilibrium full engineering cycle inverse analysis preconditions |
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